Six Flags New England is offering entry for $6 to anyone dressed up as Mr Six on April 10.
The offer is only valid for that day (the first day of the park's season), and the costume must be "approved" by the park. Visitors will then receive a coupon that allows them to buy an entry ticket for $6.
Mr Six featured in 2004-05 advertising campaign for Six Flags parks. The much-parodied character is a bald, wrinkled old man clad in a black tuxedo and thick-framed glasses. Readers looking for costume tips should watch the trailer featuring Mr Six.